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folly - definition and synonyms

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noun     folly pronunciation in American English
Word Forms
  1. 1
    [countable/uncountable] formal a way of thinking or behaving that is stupid and careless, and likely to have bad results

    The judge described the incident as an act of folly.

    it is folly to do something:

    It is absolute folly to go mountain climbing without the proper equipment.

    the folly of (doing) something:

    She soon realized the folly of her actions.

    I pointed out the folly of overspending on that scale.

  2. 2
    [countable] a building that has no practical use and is built as a decoration
    1. a.
      mainly journalism a building or project that costs a lot of money and is not useful


to manipulate someone psychologically so that they begin to question their own perceptions and memories

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Dunning-Kruger effect

the phenomenon by which an incompetent person is too incompetent to understand his own incompetence

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